Self-heating soldering-tool



C. M. PADGETT..

SELF HEATING SOLDERING TOOL.

APPLICATION FILED MAY8,19I9.

1,333,590. I Patented Mar. 9,1920.

INVENTOR.

ATTORNEYS UNITET) STATES PATENT I CLAUDE M. renenrr, or CHICAGO, 11.1mm, .essrsiven or mini-ram T0 VIVIAN max TENNYSON, or onronso, ILLINOIS. V

SELF-HEATING sonnnnINs-Toon 0 (.435 whom it may concern: v

Be it known that I, CLAUDE M. Pnnenr'r, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Self-Heating Soldering- Tools, of which the following is a specificaunderstood, reference is had to the acconn panying drawing,-

forn'iing a .partof this specification.

In the drawing, Figure 1 is a side elevation of the tool, with parts in section;

. Fig. 2 is a cross-section on the line 2-2 of Fig. 1, and V Fig. 3 is a plan view of the tool with a portion of the handle broken away.

Referring specifically to the drawing, 5

i denotes the handle of the device, the same being hollow so as to serve'as a liquid fluid reservoir. The outer end of the handle is fitted with a screw plug 6 which is removable to permit filling of the reservoir. The liquid fuel is forced from the reservoir by air pressure asusual, an air pump 7 being carried by the plug 6. The barrel of the pump is located in the reservoir and has an outlet tube 8 which discharges near the top of the reservoir. 7

To the forward end of the reservoir 5 is connected a fuel discharge pipe 9 into which a wick 10 extends for conducting the liquid fuel thereinto when the device is inclined or in an upright position. The fuel will feed itself when the device is placed horizontally. The discharge pipe 9 leads to a circular plpe or tube 11 formed integral with, and on the outside of a mixer tube or chamber 12 'in-- terinediate the ends of the latter. The tube pointed as usual. the tube 12 as shown in Fig. 1, and closes the outer end thereof. The inner end'of the Specification of Letters Patent.

' Application fiiedna 's, 191s. Serial a... 295,677.

Patented Mar. 9, 1920.

tip 141, inside the tube 12, has a central cavity 15 terminating in lateral branches 16, which open through the sides of the'tip,back of its point. 1

Into the rear end of the mixer tube 12' opens a fuel delivery pipe 17 carrying a needle valve 18 forcontrolling the discharge of fuel into the tube. The pipe 17" is in longitudinal alinement with the tube 12 and positioned centrally'thereof. The pipe 11 encircles the tube 12 intermediate its ends and back of the perforations .13, and to the 'rear of the pipe 11, the tube 12 has two dia metrically opposite air-inlet openings 19 shown dotted in Fig. l. These openings are triangular and so arranged that when the tool is propped up in inclined position, as

shown in Fig. 1, the bottom edges of the I openings are horizontal. sufficient amount of fuel to be discharged into the rear end of the tube 12 for starting the burner, by applying a match at one of v the openings.

At a point diametrically opposite where the pipe 9 connects with the pipe 11, a rearwardly extending branch pipe 2O connects the latter with the pipe 17. I

This permits a ij The .air openings 19 are protected from drafts by shields or wings 21 extending rearward from the pipe 11. When the torch is burning to heat the tip 141-, preparatory to the use of the tool, thesame is pp by 11 Pair of props 22 pivoted to ears 23 on the bottom of the pipe 9.

The props are foldable alongside the pipe 9, as" shown dotted in Fig. 1, in which position they are held by side spring clips 24 on said pipe. a

The forward end 25 of the pipe 9,'serves as a vapor generator, and a further'vaporization of the fuel takes place in the pipe 11. The vapor is discharged past the needle valve 18 into the mixing tube 12 where it openings19 and 13, and upon being ignited at the openings 16 it burns with an intensely hot flame around the tip 1 1, so that the lat ll".lX(1S with the air entering through the I,

be made in one piece. The pipe 9 screws into the part 25 and the latter is a continuation thereof.

The tool is simple and compact in construction, and also economical in fuel consumption, as thetuel is completely vaporized inits passage through the pipes 25 and 11, thesame therefore serving as a retort. The tube or pipe 11 is kept very hot as it is integral With the mixing tube or chamber 12.

I claim:

1. Ina self-heat ng soldering tool of the liquid fuel burner type, a mixing chamber having side air inlets, a soldering tip connected to the forward end. of the chamber and having side burner apertures leading from the chamber, a retort tube integral With the mixing chamber and encircling the same externally, intermediate'its ends, the air inlets being in advance of and to the rear of the tube, Wind shields over the rear air inlets, a fuel delivery pipe to the retort tube, and a connection between the retort tube and the mixing chamber. 2. In a self-heating soldering tool of the liquid fuel burner type, a mixing chamber having air inlets, a soldering tip connected to the forward end of the chamber and having burner apertures leading from the chamber, a retort tube integral With the mixing chamber and encircling the same externally, diametrically opposite fuel pipes on the out side of the mixing chamber extending rearardly from the retort tube and integral therewitln a supply connection to one of the pipes, and a valved connection between the other pipe and the rear end of the mixing chamber,

In testimony whereof I alfiX my signature.

CLAUDE M. PADGETT. 

